Thank you, Andy. Before I dive into the financials, I want to thank you, Mike, for your exceptional leadership and incredible partnership over the years. Your vision and execution have positioned the company well for the future. And Amit, welcome aboard. I'm excited to work with you as we advance Five9 to the next chapter. Now turning to our financial performance for the fourth quarter. We're pleased to report strong Q4 results with total revenue coming in at $300 million, representing 8% growth year-over-year. Subscription revenue growth accelerated to 12% year-over-year in the fourth quarter, primarily driven by: first, enterprise AR revenue growth accelerating to 50% year-over-year, now making up 12% of enterprise subscription revenue; second, core CCaaS growth accelerating to 8% year-over-year; and third, continued momentum market where 228 of our million-plus ARR customers grew subscription revenue 24% year-over-year, now making up 59% of subscription revenue. Additionally, our concurrent seat count continued to grow at a healthy rate, both quarter-over-quarter and year-over-year, relatively in line with our core CCaaS revenue growth. Subscription revenue represented 82% of total revenue, up from 79% a year ago. And we expect this mix shift to continue as we focus on high-margin subscription revenue, increasingly led by our AI solutions. Telecom usage represented 11% of revenue and professional services made up the remaining 7%. With regard to seasonality, as expected, the sequential uptick in our consumer and health care verticals in Q4 was meaningfully less than last year for telecom usage. For subscription revenue, sequential growth was better than anticipated, but still less than Q4 of last year. Our enterprise business represented approximately 91% of total revenue on an LTM basis. Within this category, LTM enterprise subscription revenue grew 15% year-over-year. Our commercial business represented the remaining 9%. As a reminder, this part of our business underperformed in Q3, but the immediate actions we implemented drove favorable results in Q4, and we expect LTM year-over-year growth to return to normal historical levels next quarter. With regard to our dollar-based retention rate, our spot rate increased sequentially, while the LTM rate stepped down from 107% in Q3 to 105% in Q4 as anticipated. This is primarily due to tough compares as Q4 '24 benefited from strong seasonality and our largest customer completing its multiyear ramp. In 2026, we expect LTM DBRR to remain range bound within a small band in the first half and inflect upward in the second half. Turning now to profitability. Q4 adjusted gross margin was 63%, down by approximately 40 basis points year-over-year, primarily driven by lower gross margins in telecom usage and PS. Adjusted EBITDA margin increased by approximately 260 basis points year-over-year to 26% as we continue to focus on disciplined expense management. Additionally, we continue to boost productivity as demonstrated by our revenue per employee increasing 14% year-over-year. Q4 GAAP EPS was $0.23 per diluted share, representing 5 consecutive quarters of positive GAAP earnings, while non-GAAP EPS came in at $0.80 per diluted share. In terms of cash flow, we generated $84 million or 28% of revenue in operating cash flow. Additionally, we generated free cash flow of $67 million or 22% of revenue, which represented over 10 percentage points of margin improvement year-over-year. As a result, we ended the quarter with total cash and investments of $697 million. And now for a closer look at key full year 2025 income statement metrics. 2025 total revenue came in at $1.15 billion, growing 10% year-over-year, with subscription revenue growing 13% year-over-year. 2025 adjusted gross margin expanded by approximately 110 basis points year-over-year to 63%, while 2025 adjusted EBITDA margin expanded by approximately 470 basis points to 23%. 2025 GAAP EPS was positive for the first time on an annual basis at $0.45 per diluted share, while non-GAAP EPS came in at $2.96 per diluted share. 2025 operating cash flow finished at $226 million, and free cash flow came in at $162 million. Now turning to our full year 2026 and first quarter guidance. For 2026 revenue, we're initiating our guidance at a midpoint of $1.254 billion, which is in line with the high-level outlook we provided last quarter. For Q1 revenue, we're guiding to a midpoint of $299.5 million, which is also consistent with the high-level outlook of relatively flat sequential change we shared last quarter. In terms of quarterly progression, we expect Q2 revenue to increase slightly quarter-over-quarter, followed by momentum building further throughout the year. As a result, we continue to expect revenue to return to double-digit growth in the second half of 2026, driven by our strong backlog of both new logo and installed base bookings. With regard to the bottom line, we're guiding 2026 non-GAAP EPS to a midpoint of $3.18 per diluted share, which is higher than the high-level outlook of $3.14 per diluted share that we provided during our last earnings call. We're also guiding to continued GAAP profitability in 2026 with a midpoint of $0.91 per diluted share for GAAP EPS. For Q1 non-GAAP EPS, we're guiding to a midpoint of $0.68, which reflects a typical sequential decline in the first quarter of the year. As for the remainder of the year, we expect relatively flat sequential move in the second quarter and large improvements in the second half. Also, for other key profitability metrics, we expect at least 24% in annual adjusted EBITDA margin and approximately $175 million in annual free cash flow. Additionally, we plan to host an Investor Day in late 2026, where we will provide additional details on our strategic priorities and long-term financial outlook. We look forward to sharing more with you at that time. Finally, on our share repurchase program, we completed a $50 million accelerated share repurchase on February 2, buying back approximately 2.6 million shares. We have $100 million remaining under our authorization through December 2027. This reflects our strong cash generation and confidence in Five9's value creation opportunity. In closing, 2025 was a transformational year for Five9. We delivered strong financial performance, expanded our AI capabilities and strengthened our strategic partnerships, and we believe we have positioned the company well for sustained profitable growth. With Amit now leading the team, we're energized about our opportunities ahead and committed to executing our strategy to deliver long-term shareholder value. And with that, operator, please open the line for questions.